code: def test_single_dataframe_merge(daskify):
      right = cudf.DataFrame({"x": [1, 2, 1, 2], "y": [1, 2, 3, 4]})
      left = cudf.DataFrame(
          {"x": np.arange(100) % 10, "z": np.arange(100)}
      )
  
      dleft = dd.from_pandas(left, npartitions=10)
  
      if daskify:
          dright = dd.from_pandas(right, npartitions=1)
      else:
          dright = right
  
      expected = left.merge(right, how="inner")
      result = dd.merge(dleft, dright, how="inner")
      assert len(result.dask) < 25
  
      dd.assert_eq(
          result.compute().to_pandas().sort_values(["z", "y"]),
          expected.to_pandas().sort_values(["z", "y"]),
          check_index=False,
      )
  
file_path: cudf/python/dask_cudf/dask_cudf/tests/test_join.py
imports: from functools import partial
  import numpy
  import pandas
  import pytest
  from dask import dataframe
  import cudf
  import dask_cudf
label_desc: Use image node_id 8 for calling a global function with example usage: test_single_dataframe_merge(daskify) without return types